short and sweet!

For future reference, when posting a solution in a comment like that, mark your post as having spoiler content. Your post was visible in the homepage discourse. I've marked it for you this time.

Just do it in one line...

У меня длинее (

L

Hi,

except that's not logical. You're basically building a test that is saying that one is two. => doesn't make sense. Especially because every regular CW user reading "make it a oneliner" will actually use one single line.

Your kata has been retired (automatic, based on the votes). If you're interested in authoring other kata, you should read the documentation about it before your next try.

https://docs.codewars.com/authoring/kata

Cheers

The test doesn't count the signature as a line and expects the signature, which I think is fair.

program should be written in one line

This error was from trying to use a lambda which was literally one line. Meanwhile, what the code expects is a standard def function with two lines. It won't work itself if it's set into one line. So, the code is really expecting a two-liner.

boring and predictable solution: downvote

tfu na teba pendos

The fix you used in your solution is horrible, please avoid overwriting False like that (also, it won't work in 3.x).
remove is mistaking False for 0 because False == 0 #True.